Unit 1 : Light sources and optical fiber
Authored by S Chorage
Professional Development
University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a light source?
converts ac to dc
converts electrical signal to light
converts light into electrical signal
converts visible light to invisible light
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following light source works on the principle of spontaneous emission?
LED
PIN
APD
LASER
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Stimulated emission takes place in which of the following device?
APD
LASER
LED
PIN
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Select the wavelengths used for optical transmission windows
1310 nm
850 nm
1550 nm
600 nm
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Which of the following is true for an LED? (multiple answers)
linear output
low cost
broad spectral width
complex drive circuit
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For a single mode optical fiber which of the options are correct?
small core size
large bandwidth
only one mode
all of the above
7.
FILL IN THE BLANKS QUESTION
45 sec • 1 pt
For a single mode fiber the V-number must be
(a)
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